Sempervivum arachnoideum

Sempervivum arachnoideum, the cobweb house-leek,[1] is a species of flowering plant in the family Crassulaceae, native to European mountains, in the Alps, Apennines and Carpathians. Growing to 8 cm (3 in) tall by 30 cm (12 in) wide, it is a rosette-forming succulent perennial, valued in cultivation for its ability to colonise hot, dry areas via offsets.[2]

Sempervivum arachnoideum
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Crassulaceae
Genus: Sempervivum
Species:
S. arachnoideum
Binomial name
Sempervivum arachnoideum

The specific epithet arachnoideum refers to its furry central rosettes (long ciliate leaf margins), resembling spider webs.[3]

It flowers in July, with pink flowers that are raised on stems and are hermaphroditic (having both male and female organs).

This plant,[4] and the subspecies Sempervivum arachnoideum subsp. tomentosum,[5] have gained the Royal Horticultural Society's Award of Garden Merit.[6]

References
  1. BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  2. RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332965.
  3. Harrison, Lorraine (2012). RHS Latin for gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  4. "RHS Plant Selector - Sempervivum arachnoideum". Retrieved 5 March 2021.
  5. "RHS Plantfinder - Sempervivum arachnoideum subsp. tomentosum". Retrieved 9 November 2018.
  6. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 96. Retrieved 9 November 2018.
  • S. arachnoideum flower
  • Another flower
  • Characteristic "spider web" on rosettes
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.